The high-risk version of a gene associated with Alzheimer’s disease hinders the brain’s ability to clear out a troublesome protein, a new study finds. Researchers have known that people who carry the e4 version of the gene APOE are at higher risk for Alzheimer’s disease and more likely to have cell-killing plaques in their brains than people who have the e3 or e2 versions. But it hasn’t been clear whether people with the e4 version made more of the plaque protein — called amyloid-beta — or if the stuff just stuck around in their brains longer. Read the full story.
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